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CVE Record

CVE-2021-2428: Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core).

Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Oracle Coherence. Successful attacks of this vulnerability can result in takeover of Oracle Coherence. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

HighCVSS 8.1Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

Oracle Coherence has a high-severity network-reachable vulnerability. An unauthenticated attacker with access over T3 or IIOP could, despite high attack complexity, take over Oracle Coherence. The business concern is serious for exposed middleware because a successful attack can affect confidentiality, integrity, and availability.

Executive priority

Prioritize remediation for internet-facing or broadly reachable middleware first. The vulnerability is high impact because successful exploitation can lead to Coherence takeover, but urgency should be balanced by the documented high attack complexity and lack of sourced active-exploitation evidence.

Technical view

CVE-2021-2428 affects Oracle Coherence Core in versions 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, and 14.1.1.0.0. The CVSS 3.1 vector is AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. The documented attack paths are T3 and IIOP network access.

Likely exposure

Exposure is likely where affected Oracle Coherence versions are deployed and T3 or IIOP is reachable from untrusted networks. Internal-only deployments still matter if those protocols are broadly reachable inside the environment.

Exploitation context

The provided sources do not state active exploitation, and the CVE is not marked as CISA KEV. Oracle describes exploitation as difficult because attack complexity is high, but no privileges or user interaction are required once network access exists.

Researcher notes

Focus validation on version identification and protocol exposure. The source bundle does not provide exploit details, root cause, CWE mapping, indicators of compromise, or a specific fixed version list beyond Oracle CPU guidance.

Mitigation direction

  • Review Oracle's July 2021 Critical Patch Update guidance for this CVE.
  • Patch or upgrade affected Oracle Coherence deployments per Oracle guidance.
  • Restrict T3 and IIOP access to trusted networks only.
  • Inventory Fusion Middleware environments for embedded or bundled Coherence usage.

Validation and detection

  • Confirm deployed Oracle Coherence versions against the affected version list.
  • Check whether T3 or IIOP is reachable from untrusted network segments.
  • Verify applicable Oracle CPU fixes are installed on each affected environment.
  • Review middleware architecture for indirect Coherence exposure through dependent services.
Prepared
Confidence
high
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2021-2428 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
8.1 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.1CVSS 3.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H2.25.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

8.1High
CVSS 3.1 vector shape for CVE-2021-2428Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Oracle CorporationCoherence12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, 14.1.1.0.0Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.